Insulating material



Jan. 16, 1923.

1,442,325. J. DE LONG.

INSULATING MATERIAL.

FILED 'nEc.23. |920.

ATTORNEYSSl Patented Jian. ll, l923.

Masas ATENT @FFHCEO TULIUS DE LONG, OF LAKE MAHOPAC, NEW YORK.

INSULATIN G MATERIAL.

Application filed December 23, 1920. Serial No. 432,649.,

To all whom t may concern Be it known that I, JrLiUs DE LoNG, a citizen of the United States, residing at Lake Mahopac` in the county of Putnam and State of New York, ha've invented new and useful Improvements in Insulating Material, of which the following is a specifica- I economically manufactured, which will bev semi-fire proof in its character and which possesses sufficient rigidity to be easily handled and applied. The other objects of my invention will be more clearly pointed out in the specification. i

-Reference is hereby made to the following pending applications by the applicant relating to the same or kindred subject matter, namely: Serial No. 517,923, Serial No. 556.- 579 and Serial No. 591,362.

Figure 1 is a sectional view of my improvement in insulating material. My .inn sulating material consists of a sheet of burlap 1 or other similar material and cattle hair orother fibrous matter 2, which is formed into a compact felt by the well known process of punching. After the felt has been formed, I apply adhesive material to both surfaces and a covering of asbestos paper 3, which is firmly secured to the felt by the adhesive material. I apply the adhesive material in such quantities as to not only secure the covering` of asbestos 3 firmly to the felt but to add rigidity and stiffness to the protecting cover of asbestos paper and to give the finished article such rigidity and stiffness that it can be readily handled and applied.

My finished product, when so constructed, possesses many advantages over the insulating material-heretofore known and used in that it is much less expensive to manufacture. is semi-fire proof and possesses sufficient rigidity and stiffness to be easily handled and applied and is not easily injured by moisture.

Having described my invention, I claim:

1. A n insulating material composed of burlap, cattle hair, or other suitable fibre, felted thereto and on both sides thereof and an asbestos covering on each side thereof and secured thereto by adhesive material.

2. An insulating material composed of burlap, cattle hair` or other suitable fibre. felted thereto and on both sides thereof and anA asbestos covering on each side thereof and secured thereto by adhesive material, the adhesive material applied being suflicient in quantity and of such character as substantially to stiften the asbestos paper covering so that the finished product may be conveniently handled and applied.

Signed at New York, this 21st day of December, 1920.

JULIUS DE LONG. 

